Introduction to ISS and SDTP

Introduction to SDTP Regional Technical Support and Training Centers and Staff

Presented

Dr. C. M. Allison

Innovative Systems Software

SDTP is an international cooperative program developing nuclear safety related software

• Nearly 60 organizations in 28 countries support activities

– Program members and licensed software users

– ISS administers program

• Regional technical support and training centers currently located in US, Europe, China, and Latin America

• Activities supported through in-kind contributions, membership fees, and software licensing fees

2 Innovative Systems Software

SDTP-supported software

• RELAP/SCDAPSIM • SAMPSON (NUPEC)

– Detailed severe accident analysis

• FUELSIM – LWR fuel behavior analysis

• Advanced graphical user interfaces – Integrated graphics displays – RELSIM

ISS and SDTP technical support and training team

• Regional centers in US, Spain, Croatia, Italy, China, Romania, and Mexico provide technical support and training for SDTP-supported software

• Regional center technical experts provide support for other organizations


Regional technical support and support centers

• US (Idaho) ISS

– 30+ years experience with RELAP5, SCDAP, FRAP

• Staff members leaders of US NRC RELAP5, FRAPCON/FRAPT, SCDAP/RELAP5 code development at INL 1970-1996

– SDTP responsibility

• Coordinate SDTP software development, validation, and training activities

• RELAP/SCDAPSIM and FUELSIM configuration control

• Code/model development training and support



• Croatia – EncoNet/University of Zagreb – 30+ years experience with RELAP5 and SCDAP

• US NRC CAMP (RELAP/MOD3.3, TRACE)

• Safety and licensing analysis support for Krsko NPP, Chasnupp NPP

• Training IAEA – thermal hydraulics and severe accident

– SDTP technical support and training • PWR model development and technical review

• Thermal hydraulic code coupling and model development



• Spain – University of Catalonia

– 30+ years experience with RELAP5


• Safety and licensing analysis support for Spanish utilities and regulatory body

– SDTP technical support and training

• PWR model development and technical review

• RELAP5 code/model development and training

• Uncertainty methods development and training



• Italy – University of Pisa

– 30+ years experience with RELAP5


• Safety and licensing analysis support for Argentina

• ATUCHA II NPP


• RELAP5 code/model development and training

• Numerical methods development

• Uncertainty methods development and training



• Germany – Karlsruhe Institute of Technology (formerly known as Forschungszentrum Karlsruhe)

• 30 + years experience performing integral and separate effects experiments such as CORA and QUENCH

• 30+ years experience with RELAP5 and SCDAP

powersupply

powersupply

cooling bundle foot

cooling bundle head

topquenching(option)

bottom quenching

Ar cooling jacket

Ar purge flow

ZrO insulation2

containment

shroud

H O2

H O2

H O2

H O2

H O2

steam + Ar

steam + Ar + H2

H O2

Ar

Ar

H O2

He(fuel rods)

test bundle

coolingoff-gas pipe

heated length 1 m~~

2.9 m

800 mm

H O or steam2

H O2



• Mexico – University of Mexico

– 10+ years experience with RELAP5 and SCDAP

• Safety and licensing analysis support for regulatory body and Laguna Verde NPP


• RELAP5 BWR code/model development and training

• Plant simulator methods development and training



• Romania – Polytechnic University


• Safety and licensing analysis support for regulatory body and utility


• CANDU/HWR plant model development and review

• Model development and training



• China – Shanghai Jiao Tong University



• Model development and training – 3D reactor kinetics

– SCWR models and correlations


ISS staff and consultants

Dr. Chris Allison

• INL (Idaho National Laboratory) – 1974-1996 – Manager and technical leader RELAP5, TRAC-BD,

and SCDAP/RELAP5 code development activities

• ISS (Innovative Systems Software, LLC) – Administrator and technical leader - SDTP code

development and training activities


Richard (Dick) Wagner

• INL (Idaho National Laboratory) 30 + years – …

– Chief programmer and architect – RELAP5

• ISS (Innovative Systems Software, LLC) – RELAP/SCDAPSIM chief programmer and architect

– Coordinates RELAP5 TH model/code development activities


Larry Siefken


– Leader and prime model developer – FRAP-T transient fuel behavior code

– Prime model developer – SCDAP fuel behavior and core damage progression models

• ISS (Innovative Systems Software, LLC) – Coordinates SCDAP model development activities


Judy Hohorst


– SCDAP/RELAP5 code validation

– MATPRO development

• ISS (Innovative Systems Software, LLC) – Coordinates RELAP/SCDAPSIM model assessment and

validation activities

– User training


Gary Berna


– Leader and prime model developer – FRAP-CON steady-state fuel behavior code

– Model developer – SCDAP fuel behavior and core damage progression models

• ISS (Innovative Systems Software, LLC) – Code architect – FUELSIM


Other staff and consultants

• M. Perez – Uncertainty analysis, code development and training (ISS/Univ. of Catalonia)

• B. Allison – Computer and graphical software support (ISS) – RELSIM technical support and training

• M. Adorni – Fuel behavior development and assessment (ISS/Univ. of Pisa)

• S. Hagen – Experimental support (KIT - retired) • R. Riemke – RELAP5 technical support (INL

retired)


Other Key Contributors (University member PhD research)

• University of Florida – Fission product transport and deposition model

development

• McMaster University – Model development and assessment – SCWR

• India Institute of Technology – Kanpur – Gen IV alternative fluids model development

• University of California – Berkley – Gen IV (molten salt) model development


Documents

Introduction to ISS and SDTP